Marc Guiu scored the winner 33 seconds into his senior debut to give Barcelona a 1-0 home win over Athletic Bilbao.
The 17-year-old Spanish forward came on for fellow youngster Fermin Lopez in the 79th minute and struck almost immediately.
He scored his first league goal for Barcelona quicker than any other player in the club’s history.
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Victory took third-placed Barca back within a point of leaders Real Madrid, who they face next Saturday.
